/*
    Gtalk is a videoconference application on the Android Platform.

    Copyright (C) 2009 by Frederic-Charles Barthelery,
                          Jean-Manuel Da Silva,
                          Nikita Kozlov,
                          Philippe Lago,
                          Jean Baptiste Vergely,
                          Vincent Veronis.

    This file is part of Gtalk.

    Gtalk is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Gtalk is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Gtalk.  If not, see <http://www.gnu.org/licenses/>.

    Please send bug reports with examples or suggestions to
    contact@Gtalk-project.com or http://dev.Gtalk-project.com/

    Epitech, hereby disclaims all copyright interest in the program "Gtalk"
    written by Frederic-Charles Barthelery,
               Jean-Manuel Da Silva,
               Nikita Kozlov,
               Philippe Lago,
               Jean Baptiste Vergely,
               Vincent Veronis.

    Nicolas Sadirac, November 26, 2009
    President of Epitech.

    Flavien Astraud, November 26, 2009
    Head of the EIP Laboratory.

 */
package org.lansir.af.gtalk.smack.avatar;

import java.io.InputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.URL;

/**
 * An AvatarRetriever which retrieve the avatar over HTTP.
 */
public class HttpAvatarRetriever implements AvatarRetriever {

	private URL mUrl;
	private String mUrlString;

	/**
	 * Create a HttpAvatarRetriever.
	 * 
	 * @param url
	 *            the url of the avatar to download.
	 */
	public HttpAvatarRetriever(final URL url) {
		mUrl = url;
	}

	/**
	 * Create a HttpAvatarRetriever.
	 * 
	 * @param url
	 *            the url of the avatar to download.
	 */
	public HttpAvatarRetriever(final String url) {
		mUrlString = url;
	}

	@Override
	public byte[] getAvatar() throws IOException {
		if (mUrl == null)
			mUrl = new URL(mUrlString);
		InputStream in = mUrl.openStream();
		ByteArrayOutputStream os = new ByteArrayOutputStream();
		try {
			byte[] data = new byte[1024];
			int nbread;
			while ((nbread = in.read(data)) != -1) {
				os.write(data, 0, nbread);
			}
		} finally {
			in.close();
			os.close();
		}
		return os.toByteArray();
	}

}
